Environment and Ecology Quiz | Environment and Ecology Short Questions and Answers

Questions
41 The self purifying capacity of water is unable to purify the water, the reason is:
A When the inorganic matter increases it becomes polluted and unfit for use.
B When concentration of suspended particles organic and inorganic substances increases it becomes polluted.
C When concentration of dissolved substances gets increased it becomes polluted.
D When the organic matter increased it becomes polluted.

Answer: When concentration of suspended particles organic and inorganic substances increases it becomes polluted.
42 According to WHO, maximum permissible level of chlorides in drinking water is
A 600 mg/L
B 800 mg/L
C 200 mg/L
D 100 mg/L

Answer: 600 mg/L
43 Human activities add 7-9 gigatons of CO2 per annum into the atmosphere. Major contributor to this CO2 is
A Cement industries
B Burning of fossil fuels
C Fermentation industries
D Clearing of forests for agriculture

Answer: Burning of fossil fuels
44 Preparation of hazard-zoning map in case of landslide prone regions involves comprehensive investigation of
A Seismicity pattern of the region.
B Geomorphic features relating to instability of slopes.
C Details of structural and lithological settings.
D All of the above.

Answer: All of the above.
45 Identify the pair (element-health effect) which is correctly matched:
A PAN – Hypoxemia
B Mercury – Nervous disorder
C Arsenic – Kidney damage
D Lead – Methaemoglobinemia

Answer: PAN – Hypoxemia
46 Rio+20 summit was held in
A Rio de Janeiro
B Cancun
C Johannesburg
D Durban

Answer: Rio de Janeiro
47 Which one of the following statement is not correct about the Sargasso Sea?
A The Sargasso Sea records the lowest salinity of North Atlantic Ocean.
B This Sea is covered with rootless sea weeds.
C The Sargasso Sea plays a major role in the migration of the European eel and the American eel.
D There is no mixing of the water of the Sargasso Sea with the remaining water of the North Atlantic Ocean.

Answer: The Sargasso Sea records the lowest salinity of North Atlantic Ocean.
48 Which of the following oxides of nitrogen is the major air pollutant released from automobile exhausts?
A NO
B N2O
C NO2
D N2O3

Answer: NO
49 Which one of the following is a non-formal environment education and awareness programme?
A National Environment Awareness Campaign.
B Environmental Education in school system.
C Environmental Management Business Studies.
D Environmental appreciation courses.

Answer: National Environment Awareness Campaign.
50 Which of the following BOD level waste water is permitted to be released inlands by industries under water (Prevention and Control of Pollution) Act, 1974?
A 30 mg
B 150 mg
C 80 mg
D 100 mg

Answer: 30 mg
51 Which bird has been voted as United Kingdom’s first national bird?
A Robin flies
B Blackbird
C Bald eagle
D Barn owl

Answer: Robin flies
52 An expert committee report “Drowning a valley: Destroying a civilization” is related to which dam project?
A Nagarjuna Sagar Dam
B Sardar Sarovar Dam
C Alamatti
D Hirakud Dam

Answer: Sardar Sarovar Dam
53 Consider the following regarding Black Carbon (BC):
A 25% to 35% of BC in the global atmosphere comes from India and China.
B It is a solid particle or aerosol.
C It is commonly known as soot.
D All of the above

Answer: All of the above
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